Combined air-gage and magnet-tester.



`B. s. BOWERS. COMBINED AIR GAGE AND MAGNET TESTER.

APPUCATION FILED lUNE 4,1191?.

Pn'cnred Jan. 1,1918.

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1"@ all fur/7mm i may com/fem; enc?, ef me beii'ei is pie-ced the iingaekin Be it known ibut Emmas Bowne fed 3 is rovldefi et its@ ee en a citizen of ihe niied ta'es ei America, with @sew :':hrems 'so be receive@ in e Screwresiding ai. Grand Rapids, in ehe eo t] of threaded aperture ofi a sofia iron armature Rasee, and AS'vne of viizmeso'te, have inve-ni;- 3. *When 'ie armature is'piaeed aei'oss the ed cer ein new und useful improvement-s iii ends ef eieeiiomegnet ia, is attracted and Combined Air-Gages and Mngief-Te'seisf th 'Oe ieessay pull ii @"n's a meaS-- which iie following is in speciiceion.

ure of the maffiieic' s-renfii of the mao- 1 n eogect @I the present inve-nimm 1s te net.'l The spring' is se designei as to een# combine in n single mechanism :i device :fer Terieiiy meesuie neue-i si? pressures of ascertaining the pressure within e pneumatic e Ode' te COXdHa-e i7 faire and :i device im es'tingajihe sieiigiii of this Spilg Wi @he GIGSS Cieei Wiil 'in permanent megies. measuring megnes se cheese the widh The magnets used in ignition sysiems leef and -fzhiekness of eine armature that the p uii automobiles commise a plurality of peimaequgred ie deieeh ii; from e magnet having nent magnets io furnish the magiieie ieid. mflfil Sffh Wm be nearly that T@- t is s, metier f cgmmon oggiiqence gaat Qli'd (imv iie pisen Gui, its fun length. one. of the piuaiity often ieses its msgrh'bf, @ib-@Hgh "Che MESSER P6? RCh zletism and thereby effects Liiie v "eefieii ei? the magneto. The eutomobiie mhas ne is times hes oi iie magnetic pull per means of determining which of if' egziets fen 0f iis Capacity foi: both purposes 'and inch, the deviee be used te'the full exis ai; fault and ig compelled e@ i: 11g 'ifi e geuetiezis may be fiisti'ibueci over subehme te the repair seep. Fvez; le ehe ife- Simi-mdf; me imi iezigh ef ee piston.

pas? Shep thei-e ig usuaiiy e device Eef ifi; is advisereie, when e measuement is smgiing one the defective magnet. The yemecie? eo ieei-zthe pison against-retain moveeuit lsthet the goed magneee siii be dismene., se 'time me indleeiens can be convencamied together with the singie one and the owner has te eiiiiy ie te'- the expenses ef iepairing, Wiiiie ii wouizi be' easy enti inexpensive meieriereieefiy the failli, if ffqe @weer had seme eiiebie means foi testing iie magnets.

esirabie for testing the strengeh of magnets because i-he eimetme becomes detached sud demi? and the ius'mimene is carried eww/ from magnet weil nigh imp ssibie te e ceri'ect eadf; is the object of my iiwentieii pie"- To the reafing of the seeie Vide a. seis-griet esef in a ifey eeiwenient' have previee means ier locking t-iepison' om Wi'ii oni-y a nomiai expense in eddiion to the cost of ehe usuei air l ings in Wiie eesngQis s igiiiif eeeeniie emi terminates e@ "we i iii e eiim e ehe side ei' the pivot l2 eiie is exiendefi ee Te sic'e ei eiie'emi in piene pevicie spiiig mee-ns iei sensuLN y initie esige 3.2 inte A i .i2 2 eek the pisiem. `L7ie eekieg wiii oe aute- The exeiisien is l 'govifie e 'handleA fo'be ey inge?, for disengeging the een e'iz *die spring is l eeutfeiizeci by iieic A groeve ene ieee ef the pisien fiefemb. The beeiom of ihe ienziy reed off ehe soaie. This is especially with such speed time it is the gemis pmperiy memes groove l may be ronghened er serrated to augment the locking action. The piston and detent may be made of special hard steel, such as tool steel, so as to reduce the Wear.

While I have shown only one form of locking mechanism, it is obvious that other means may be devised for performing the same function.

In order to indicate the air pressures and In." gnetic forces I have made the piston of r'ctangular cross-section and have placed a 'cale on each face. On one face l have marked a'scale 20,indicating air pressuresin even units of 10 pounds While on the opposite face I have marked a scale .21 indicating similar units differing from the former by pounds. The two remaining faces 22 and 23 are similarly marked to indicate magnetic forces in even pounds and intermediate values respectively.

For conveniently storing the device i( may detach the armature. Y

It is thus apparent that l have by proper coordination of the various parts provided tivo devices in one, adapted for use in the saine line of work, therebyadding a useful tool to the mechanics chest without any material expense. v

it is understood that my invention may be embodied in various forms. lt is possible to adapt, by suitably changing various details, existing terms of air gages to operate for the purpose speciiied.

ll'lhat l claim is:

l. A combined air gage and magnet tester comprising a frame member, a movable element in the frame member, resilient means for restraining the movement of the movable element in one direction, means for admitting iiuid pressure to act on one end of the movable element against the action of the resilient means and a magnetic armature connected with the movable element to act on the opposite end thereof.

2. A combined air and magnet tester comprising a frame member, a movable element in the frame member, resilient means for restraining the movement of the movable element in one direction, means Jor admitting iuid pressure to act on one end of the movable element against the action ot' the resilient means, a magnetic armature connected with the movable element to act en Vthe opposite end thereof and scales :tor separately indicating the force applied at either of the opposite ends of the movable element to move it. y

A device for testing the air pressure of tires and the strength of horse-shoe magnets comprising a frame member, movable means in the frame member, resilient means for restraining the movement of the movable means, means for admitting fluid pressure to act on one end of the movable means against the action of the resilient means and an iron bar connected with the movable means to act on the opposite end thereof.

at either of the opposite ends of the movable' element to move it.

A combined air gage and n agnet tester comprising a frame member, a movable elcment in the frame member, resilient means for restraining the movement of the movable element in one direction, means for admitting Huid pressure to act ou one end of the movable element against the action of the resilient means, a magnetic armature,

connected with the movable element to act on the opposite end thereof, means for tcmporarily locking the movable means against return movement after it has been moved and scales Jor scparatel;7 indicating the force applied to either side of the movable element to move it.

'in testimony whereof, l atii; my signature in presence of two witnesses.

. BENJBMN S. Britt/'ERS lWitnesses Wimmer C. rimessa THOMAS Rnss'nm. 

